Products that start with a conceptual model have bigger chances of remaining consistent as they evolve and as new features are added. Creative concepts act as a north star to align everyone in the team in regards to how the product …
For smaller text, the lightest gray you can use on a white background is #767676. If you have a gray background, the text needs to be darker.
This means that when text is 24 px, 19 px bold, or larger, the lightest gray you can use on a white background is #959595.